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ISC BIND Query Port DNS Cache Poisoning
Secunia Advisory: SA30973
Release Date: 2008-07-09
Last Update: 2008-09-10
Popularity: 9,384 views

Critical:
Moderately critical
Impact: Spoofing
Where: From remote
Solution Status: Vendor Patch

Software:ISC BIND 8.x.x
ISC BIND 9.2.x
ISC BIND 9.3.x
ISC BIND 9.4.x
ISC BIND 9.5.x

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CVE reference:CVE-2008-1447


Description:
A vulnerability has been reported in ISC BIND, which can be exploited by malicious people to poison the DNS cache.

The vulnerability is caused due to the DNS servers not sufficiently randomising the DNS query port number, which can be exploited to poison the DNS cache.

The vulnerability is reported in all BIND 8 and 9 versions when running as caching resolver.

Solution:
Update to version 9.5.0-P2, 9.5.0-P2-W1, 9.4.2-P2, 9.4.2-P2-W1, 9.3.5-P2, or 9.3.5-P2-W1 to expand the query port range to mitigate attacks.

Use DNSSEC.

Provided and/or discovered by:
Dan Kaminsky, IOActive

Changelog:
2008-08-04: Updated "Solution" section as the vendor issued updated versions to e.g. fix a performance problem within the previous patches. Added links to "Original Advisory" section.
2008-09-05: Updated "Solution" section as the vendor issued an updated version 9.4.2-P2 for the Windows platform, which fixes scalability issues due to changes in BIND 9.4.2-P1 and -P2. Added link to "Original Advisory" section.
2008-09-09: Updated "Solution" section as the vendor issued an updated version 9.3.5-P2 for the Windows platform, which fixes scalability issues due to changes in BIND 9.3.5-P1 and -P2. Added link to "Original Advisory" section.
2008-09-10: Updated "Solution" section as the vendor issued an updated version 9.5.0-P2 for the Windows platform, which fixes scalability issues due to changes in BIND 9.5.0-P1 and -P2. Added link to "Original Advisory" section.

Original Advisory:
http://www.isc.org/index.pl?/sw/bind/bind-security.php

http://www.isc.org/index.pl?/sw/bind/view/?release=9.5.0-P2
http://www.isc.org/index.pl?/sw/bind/view/?release=9.4.2-P2
http://www.isc.org/index.pl?/sw/bind/view/?release=9.3.5-P2
http://marc.info/?l=bind-announce&m=122056040831292&w=2
http://marc.info/?l=bind-announce&m=122091429213464&w=2
http://marc.info/?l=bind-announce&m=122100979203469&w=2

Other References:
US-CERT VU#800113:
http://www.kb.cert.org/vuls/id/800113


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